diff --git a/internal/proxy/task_index.go b/internal/proxy/task_index.go
index 3b69f59d4a4bb..914b752807980 100644
--- a/internal/proxy/task_index.go
+++ b/internal/proxy/task_index.go
@@ -473,7 +473,7 @@ func checkTrain(field *schemapb.FieldSchema, indexParams map[string]string) erro
 	if typeutil.IsVectorType(field.DataType) && indexType != indexparamcheck.AutoIndex {
 		exist := CheckVecIndexWithDataTypeExist(indexType, field.DataType)
 		if !exist {
-			return fmt.Errorf("data type %d can't build with this index %s", field.DataType, indexType)
+			return fmt.Errorf("data type %s can't build with this index %s", schemapb.DataType_name[int32(field.GetDataType())], indexType)
 		}
 	}
 
diff --git a/tests/go_client/testcases/index_test.go b/tests/go_client/testcases/index_test.go
index cb85e4236fade..ae0747a1636ca 100644
--- a/tests/go_client/testcases/index_test.go
+++ b/tests/go_client/testcases/index_test.go
@@ -864,7 +864,7 @@ func TestCreateSparseUnsupportedIndex(t *testing.T) {
 	// create unsupported vector index on sparse field
 	for _, idx := range hp.GenAllFloatIndex(entity.IP) {
 		_, err := mc.CreateIndex(ctx, client.NewCreateIndexOption(schema.CollectionName, common.DefaultSparseVecFieldName, idx))
-		common.CheckErr(t, err, false, fmt.Sprintf("data type 104 can't build with this index %v", idx.IndexType()))
+		common.CheckErr(t, err, false, fmt.Sprintf("data type SparseFloatVector can't build with this index %v", idx.IndexType()))
 	}
 
 	// create scalar index on sparse vector